Building or maintaining an AR-15 lower receiver often involves handling tiny springs and detents that can easily launch across the workbench. The CMC Triggers AR-15 Lower Receiver Oops Kit provides a practical solution by supplying essential replacement components for common build mishaps, helping you complete projects efficiently without delays. Key Features Comprehensive replacement parts designed specifically for AR-15 lower receiver assemblies Includes multiple quantities of high-wear items to cover several incidents from a single kit Precision-engineered components that meet or exceed standard fitment requirements for reliable function Compact storage solution for keeping on your bench during builds or maintenance Kit Contents Buffer Retainer (1) and Springs (2) Takedown/Pivot Detents (4) and Springs (6) Selector Detents (2) and Springs (2) Disconnector Springs (2) Bolt Catch Springs (2) and Detent (1) Benefits for AR-15 Builders This kit addresses the frustration of lost parts during lower receiver assembly or disassembly. By stocking these critical detents and springs in advance, builders can maintain momentum on custom projects, repairs, or routine maintenance. The generous quantities ensure coverage for multiple uses, making it a cost-effective addition to any armorer's toolkit. Specifications Compatibility: AR-15 platform lower receivers Finish: Black Manufacturer: CMC Triggers SKU: 36340 Why Choose This Product Experienced builders know that small parts are prone to disappearing during spring-loaded installations. This dedicated Oops Kit from CMC Triggers offers peace of mind with factory-matched components, reducing downtime and the need for separate sourcing of individual pieces. It supports both novice and professional builders seeking dependable, ready-to-use spares. Keep your AR-15 builds on track with this essential lower receiver replacement parts kit from CMC Triggers.